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Earth probing radar system

  • US 4,430,653 A
  • Filed: 12/19/1980
  • Issued: 02/07/1984
  • Est. Priority Date: 11/02/1979
  • Status: Expired due to Fees
First Claim
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1. A method for determining condition and homogeneity of the structure of coal seams, comprising:

  • transmitting pulsed electromagnetic energy into the face of a coal seam;

    receiving said energy transmitted into said face to develop a return signal per transmitted pulse;

    processing selected successive return signals to eliminate source coherent interference while increasing the signal to noise ratio; and

    indicating visually any structural inhomogeneities within said coal seam.

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